Mill for rolling disks



June 28, 1960 F. P. SHARPE MILL FOR ROLLING nzsxs Filed Jan. 30, 1956 3Sheets-Sheet 1 INVENTOR. FREDERICK R SHARPE,

S m D mm m 5R m RF L L I M 0. 6 9 1 8 2 e n u J Filed Jan. 30, 1956 5Sheets-Sheet 2 INVEN TOR. FREDERICK P. SHARPE.

June 28, 1960 F. P. SHARPE 2,942,504

MILL FOR ROLLING DISKS Filed Jan. 30, 1956 3 Sheets-Sheet 3 w b A F 3INVENTOR.

FREDERICK P. SHARPE,

i d w tent MILL FOR ROLLING DISKS Frederick P. Sharpe, Dearborn, Mich.,assign'or to Kelsey- Hayes Company, a corporation of Delaware Filed Jan.30, 1956, Ser. No. 562,061 1 Claim. (Cl. 80 -16 The invention relates torolling mills and refers more particularly to mills for rolling work ofthe disk type.

The invention has for one of its objects to provide an improved rollingmill constructed to operate in an eflicient and economical manner.

The invention has for another object to provide an improved rolling millhaving a carriage movable toward and away from the work, heads angularlymovably supported on the carriage, rolls on the heads engageable withopposite sides of the work, and means engageable with the heads at thesides of the head supports opposite the rolls for moving the rollstoward each other and into engagement with the work during the movementof the carriage away from the work.

The invention has for a further object to provide an improved rollingmill having carriages movable toward and away from each. other and theWork and carrying rolls engageable with opposite sides of the work, ahydraulic cylinder for moving both carriages toward and away from thework, and a. pinion. and rack device connected. to both carriages forcompelling simultaneous equal movement thereof upon operation of thehydraulic cylinder.

With these and other objects in view, the invention resides in the novelfeatures of construction and combinations of parts as more fullyhereinafter set forth.

In the drawings:

Figure 1 a plan view oi the invention; I

Figures 2 and 3 are cross-sections on the lines 2-2, an'd13-3,respectively, of Figu'rc'l;

Figure 4 is a view similar toa portion of Figure 2 showing parts of therollingmill in a difierent position.

The rolling mill comprises the base 1 resting on the flooring, the twocarriages 2 movable toward and'away from each other and the work, andthe pairs of upper and lower heads 3 and 4 respectively movably mountedon the carriages and carrying the upper and lower rolls 5 and 6respectively.

The carriages 2 are slidably mounted upon the parallel rods 7 whichextend longitudinally of the base 1 and are supported thereby. Eachcarriage has the upright side walls 8 and the integral bottom wall 9.The side walls are formed at their lower ends with the bosses 10encircling and slidable on the rods 7. An upper head 3 and a lower head4 are located between and are angularly movably supported on the uprightside wall-s 8 of each carriage by the parallel pivot shafts 11 and 12respectively secured to the upper and lower heads and j-ournaled in theside walls. The upper and lower rolls 5 and 6 are located at the innerends of the heads and are fixedly mounted on the drive shafts 13 and 14respectively which are journaied in the upper and lower heads with theiraxes in the same vertical plane.

The upper and lower rolls are respectively engageable with the upper andlower sides of the work which is mounted on the work support 15rotatable about a vertical axis. The work in the present instancecomprises a rollingmill embodying disk blanks of uniform thickness inface to face contact.

. gearing 21 which, in turn, is driven by the electric motor 22, thereduction gearing and motor being mounted on an end of the base 1.

For the purpose of positively swinging the upper and lower heads 3 and 4to move the upper and lower rolls 5 and 6 toward each other during themovement of the carriages 2 away from each other and the work to therebytaper the work, I have rovided the cam devices 23 and the rollers 24engageable by the cam devices. Each cam device comprises the upper andlowercams 25 and 26 and the slide 27 on whichthe cams are mounted. Thereare two cam devices 23: for each pair of upper and lower heads and theirslides are longitudinally slidab'ly mounted on and guided by theuprights 28 carried by the base I. There are also two rollers 24 mountedon each of the upper and lower heads and these rollers are journaled onthe brackets 29 fixedly secured to the outer ends of each. of the upperand lower heads. To variably control the operation of the upper and.lower rolls 5 and6, the cam devices 23 are. all adjustablelongitudinally at the same time by the fiuid pressure actuated'cylinders 30', there being one cylinder for each of the slides 27. Thecylinders are. standard or conventional and connected to the same sourceof fluid under" I pressure and are of the three-position type. Otherfluid pressure actuated cylinders' 31, connected to a suitable source offluid under. pressure, serve to lock the cam devices in their positionsof adjustment. are of the double; acting type and operate the lockingpins 32' each of which is engageable' in any one of the three openings33 in eac'hof the cam slides 27.

To move the carriages 2 away from the work and each other and toward thework and each other, I have" provided the single fluid pressure actuatedcylinder 34 and the two pistons 35. The cylinder is hydraulicallyoperated and is located in a pit in the flooring and is secured by. theyoke 36 to the underside of the base 1.

The twopistons which are s'lidable" in the. cylinder have.

their. rods 37 connected to the carriagesz by means of carriages and thebase. This device comprises the pinion 39 journaled in the bearings 40carried by the base 1 and the racks 41 and 42 meshing with the upper andlower portions of the pinion and connected to the abutments 43 dependingfrom the bottom walls 9.

To enable ready removal of the work after it has been rolled and readyinsertion of other Work to be rolled, and also to prevent contact of theupper and lower rolls 5 and 6 of each pair of rolls during the inwardmovement of these rolls to operative position, the upper and lower rollsof each pair of rolls are adapted to be respectively raised and loweredand thereby separated. This separating movement is accomplished when thecam devices 23 have been adjusted to their outermost positions clearingthe rollers 24 when the carriages 2 carrying the rollers 24 are in theiroutermost positions, so that the heads 3 and 4 may be swung about theirpivot shafts 11 and 12. As shown, the fluid pressure actuated cylinders44 are provided for swinging the heads 3 and 4 by means of the racks 45connected to the V tively. There is one cylinder 44 for each pair ofheads 7 These cylinders 3 and this cylinder is mounted on a side wall 8of the carriage 2 associated with the pair of heads.

In operation, assuming the parts to be in the position shown in Figure 4with the cam devices 23 and the rollers 24 in their outermost positionsand the rollers clearing the cam devices and also with the upper andlower rolls and 6 separated and being rotated, work to be rolled may bereadily inserted into place on the work support 15. Fluid under pressuremay then be admitted to the outer ends of the cylinder 34 to return thecarriages 2 and the rolls 5 and 6 to their innermost positions afterwhichfluid under pressure is admitted to the inner ends of the cylinders44 to return the rolls 5 and 6 to their operative position in engagementwith the work by means of the racks 45 and the gear segments 46 and 47.Then fluid under pressure is admitted to the outer ends of the cylinders30 to move the cam devices 23 inwmdly to their first position ofadjustment at which time the rollers 24 engage the inner ends of the camsurfaces of the cams 25. The cam devices are locked in this position bythelocking pins 32. The parts at this time are in a position with theupper rolls 5 and the lower rolls 6 in contact with or closely adjacentto the work as shown in Figure 2. Fluid under pressure is then admittedto the cylinder 34 between the pistons 35 to force the pistons outwardlyand away from each other and thereby move the carriages 2 and,consequently, the heads 3 and 4 outwardly. As the heads move outwardly,their rollers 24 move over the cam surfaces of the cams 25 and compelthe upper and lower rolls 5 and 6 to move toward each other therebytapering the work radially outwardly. After this step has beencompleted, the carriages 2 are returned to their innermost positions andthe cam devices 23 are moved inwardly to their second position ofadjustment so that during the succeeding rolling step the work will beadditionally thinned during the tapering. After the second rolling stepand while the carriages 2 are in their outermost positions, the camdevices 23 are moved outwardly to their third or outermost position ofadjustment shown in Figure 4 to provide for ready unloading and loadingprior to starting another cycle.

What I claim as my invention is:

.A rolling mill comprising an upright work support for supporting workfor rotation about a vertical axis, supporting structure, carriagesmounted on said supporting structure at diametrically opposite sides ofsaid work support for horizontal movement toward and away from said worksupport along paths in a plane extending radially relative to said worksupport, means for moving said carriages toward and away from said worksupport,

rack and pinion means mechanically interconnecting said carriages tocompel simultaneous equal movement thereof, a pair of heads on eachcarriage arranged one above the other and with the inner ends of saidheads adjacent said work support and the outer ends thereof remotetherefrom, rolls on the inner ends of the heads of each pair opposed toone another, said rolls being spaced equal distances from said worksupport in all positions of said carriages and disposed with their axesgenerally in the plane of movement of said carriages, means pivotallymounting said heads on said carriages at points intermediate the ends ofsaid heads for vertical angular movement of the heads of each pair indirections to move the rolls thereon toward each other into engagementwith the upper and lower surfaces of work on said work support atdiametrically opposite points equally spaced from the axis of rotationof the work, cam followers on the outer ends of said heads spaced fromthe pivotal mounting means for said heads a greater distance than saidrolls are spaced from said pivotal mounting means, said cam followersand rolls of each head being on opposite sides of said pivotal mountingmeans, cams engageable with said respective cam followers on that sideof said followers for forcing said heads about their pivots toward eachother into the work in response to movement of said carriages away fromsaid work support, and means for mounting said cams on said supportingstructure in selected positions of adjustment during movement of saidcarriages.

References Cited in the file of this patent UNITED STATES PATENTS377,224 Bagaley Jan. 31, 1888 1,412,431 Waite et a1. Apr. 11, 19221,430,989 Heisler Oct. 3, 1922 1,707,006 Hanna Mar. 26, 1929 2,023,656Wilkins Dec. 10, 1935 2,085,729 Coe July 6, 1937 2,294,685 Nelson Sept.1, 1942 2,513,819 Saunders July 4, 1950 2,522,315 Staat Sept. 12, 19502,588,651 Nelson Mar. 11, 1952 2,647,422 Horn Aug. 4, 1953 2,701,976Krause Feb. 15, 1955 2,763,168 Kendall Sept. 18, 1956 FOREIGN PATENTS1,029 Great Britain Mar. 9, 1880 3,163 Great Britain Feb. 10, 1903736,896 1955 Great Britain Sept. 14,

